//using clock() in a time-delay loop
#include <iostream>
#include <ctime>    //describes clock() function, clock_t type
int main()
{
    using namespace std;
    cout << "Enter the delay time ,in seconds: ";
    float secs;
    cin >>secs;
    clock_t delay = secs * CLOCKS_PER_SEC;      //convert to clock ticks
    cout<< "starting \a\n";
    clock_t start = clock();
    while(clock() - start <delay)       //wait until time elapses
        ;                               //note the semicolon
    cout <<"done \a\n";
    return 0;
}
